| 摘要 |
<p>PROBLEM TO BE SOLVED: To adjust dispresion of electron emission characteristic of the electron emissive elements forming a multielectron source by applying the auxiliary voltage to a plurality of electron emission elements, determining a reference value by measuring the electron emission characteristic in the driving by normal driving voltage lower than the preliminary driving voltage, and applying the characteristic shift voltage calculated to adjust the electron emission characteristic to a value corresponding to the reference value. SOLUTION: The characteristic shift voltage is higher than the preliminary drive voltage, and the preliminary drive voltage is higher than the drive voltage. A control circuit 309 makes the pulse generators 306, 307 apply the driving pulses Px, Py corresponding to the preliminary drive voltage, to an element through a pulse wave height value setting circuit 308, and the emission current Ie in the drive of the element is measured by a current detector 305 and stored in an Ie storing memory 309b. The characteristic adjustment pulse waveform signal is applied to the element corresponding to the emission current Ie of a reference element selected from the characteristic curve, and the detected emission current Ie, for varying the electron emission characteristic of a surface conductive-type emissive element wired on a display panel 301.</p> |
